The deadly pileup occurred about 5:30 a.m. near Valley Boulevard, prompting the shutdown of all westbound lanes for several hours, according to the California Highway Patrol.
[Ads /]
The three survivors suffered minor injuries, the CHP said. The deceased were not immediately identified.
Shortly after 9 a.m., the Highway Patrol announced that all lanes had been reopened.
[Ads /]
The cause of the crash is under investigation.